Apparatus for copying music-sheets.



W. H. GRIMSDALE.

APPARATUS FOR GOPYING MUSIG SHEETS.

APPLICATION FILED AUG. 26, 1910.

Patented Feb. 28, 1911.

3 SHEETS-SHEET 1.

W. H. GRIMSDALE.

APPARATUS POR COPYING MUSIC SHEETS.

APPLICATION FILED AUG. 26, 1910. 985,258, Patented Feb.28, 1911.

3 SHEBTS-SHEET 2.

Fi g5.

Figa..

W. H. GRIMSDALE.

APPLIGATION FILED AUG. 26, 1910.

Patented Feb. 28, 1911.

3 SHEETS-SHEET 3.

APPARATUS POR COPYING MUSIC SHEETS.

UN1TED7STATES 'PATENT OFFICE WILLIAM H. GRIMSDALE, 4 OIF -TWICKENHADL ENGLAND, ASSIGNOR TO GRIMSDALES` APAEII'ENTS LIMITED, 0F LONDON, ENGLAND.

Arranarus Fon comme MUSIC-SHEETS.

Speoication of Letters Iatent Patented Feb. 28, A1911.

Application led August 26, 1910. Serial No. 579,128. l

Britain and Ireland, and residing at Brant-V wood, Stratford Road, Twickenham, in .the

county of Middlesex, England, have invented certain new and useful Improvements in Apparatus for4 Copying Music- Sheets.

My invention relates to the 'preparation of music sheets for mechanical piano players and like instruments, and has for its object to construct an apparatus for perforating music sheets which will produce from'a master sheeta music sheet or sheets having perforations such that when 'the sheet is placed in contact with a tracker board the efl'ective areas ofv the air passages-through the sheet into the apertures of said tracker board .vary, the variation of' the elfectivel areas of the air passages representing different intensities of sound.

The master sheet may be such asis .produced by the methods described in the specification vof my Patent No. 970,492, granted September 20, 1910, or ,by hand, or by any other method and may consist of a sheet with perforations of varying width, or with a varying number of perforations to each note according to the efective area required, the variation of the widthl of the perforation, or the number of perforations to each note representing dierent intensities of sound. A master sheetjcould also be used upon which the notes are represented by indentations 0r depressions of varying depth or by projections of varying height or by other means with variations, the lsaid variations inthe representations of notes representing different intensities of sound.

spond to the different intensities of sound required to be produced in playing.

',lhe kinvention further consists in apparatus .adapted to produce from a master sheet 'perforated music sheets' having perforations of different effective areas, comprising a number of groups of punches or equivalent perforatmg means, each group comprising #a note, the punches of each `group being adapted to produce, in a music sheet per forat-ions of different effective area, in com- `bmatlon w1th punch selecting devices for such punches and differentiating selectors controlled by those variations in the representations of notes on the master sheet which represent Vdifferent intensities of sound.

' The invention also consists in the apparasheet or sheets the lperforations on a master sheet hereinafter described.

Referring to the accompanying diagrammatic .drawings,'.Figure 1 is a transverse section showing one `form of the invention. Fig. 2 illustrates diagrammatically another form of selecting mechanism; Fig. 3 is a partly transverse section andpartly longi- -tudinal section of another form of the invention; Fig. l shows affurther arrangement in which a master sheetfhaving projections is used; Fig. 5 showsfthefapplication of the invention to a master "sheet having indentations of different depths. Fig. 6-shows the application of concentric differentiating se llectors toa master sheet having projectlons,

while, Fig. 7 shows the application of concentric differentiating selectors to afinaster -sheet having indentations of varying depth.

-tus for reproducing or copying on to a blank l will be seen that if it is desired to vary the (fio i b'ar h and punch selectors k for working the i tof the music sheet.

trically at suitable centers, preferably the latter. Assuming that each group, one of `which is illustrated in Fig. 1, consists of live'punches bof different sizes arranged eccentrically at. suitable centers, there will five rows of punches arranged transversely arranged in any order of size, and each row might contain punches of different sizes, providedthat there is a punch of each size in each group. The number of punches in each .row is equal to the number of different notes in the compass of the music sheet, but it `gradations f vof the effect-ive areay ofthe air passa-ges in different parts of the compass the size and numberl of punches forming the groups may, of course, be varied as required.`

The punches are mountedon suitable frames cwith die plates e, each rowf'being .prefer- I ably arranged as described in, the specifica- `tion of English Letters Patent No. 26188 of 1907. The blank sheet fupon'which the reproduction is to be cutis movedforward between the unches and die plates, the master sheet abeing arranged in any suitable posi# a step-by-step Ina suitable position near .each row of unches a row of diferentiating selectors g.

1s provided, each punch in veach lrow provided with a differentiating selector of a suitablev size corresponding with the punch to which it is connected. A reciprocating punches vare provided for each row of punches, each differentiating selector g being connected to each punch selector Il: by a bell -crank lever Z. The differentiating se lectors consist of reciprocating fingers I vdrawn by gravity or by springs m in the d1- rection toward the master sheet and at proper intervalsdrawn by a reciprocating bar n-away from the master sheet. differentiating selectors g are so arranged Y that when relased they will be drawn to and rest against the master sheet except where '.perforations occur, when selectors of a. size smaller than the perforations will go p through the master sheet and, these being connected to the punch selectors, the `corresponding punches will be actuated.

The selector fingers may be of conical format the` ends which -enter the perfora.

tions'of. the music sheet arid move :in guides o at their upper ends so arranged that when the selector lingers are in their normal positions (.drawnaway from the master sheet) the fingers are held centrally, the guides be- Preferably each rowA .will consist of punches. of one size, but the different punches'forming a group may be The y ingsuitably. widened lat the ends nearest the master sheet to allow the selector fin rs when in engagement `with the master s eet some freedom of upovementin the transverse direction of the music sheet, while restraining them from ,any movement in the longitudinal direction. l

- When each row contains punches of one size only the rows of punches may be placed in any order, but it is most convenient to have the largest punches first in the direction of travel of the music sheet as all the differentiat-ing selectors .in connection with one group will go through one of the largest perforations as it travels from row to row and a large perforation is cut in the blank sheet sothat the smaller puncheswhich come after will pass through this perforation without unnecessary wear, whereas if the order were reversed and the smallest punch placed so as to operate first the perforations in the blank sheet would be enlarged as the sheets travel from row to row yand each of the smallerv punches would be doing unnecessary work. i

' As inthe case of the punching devices, if

itis desired to vary the gradations ofthe area of the air passages in different parts of the compass the differentiating selectors may be varied to correspond with the gradations re uired.

n the form of the invention shown in Fig. 1, it is assumed that five gradations of effective area are required. For the sake 'of clearness,it is assumed in the forms of the invention illustrated in Figs. 2, 3, 4, 5, 6,

and 7 kthat three gradations of effective area are required.

In the form. of the invent-ion in which concentric punches and dies are used the differentiating selectors are concentric and arranged as shown in Fig. 2. The concentric differentiating selectors 1, 2, 3, move in a guide 4 being no'rmally drawn away from the master sheet by the oscillating bar 6 and pressed by springs or by gravity in the direction of the mastersheet 5 so that they will come in contact withl the master sheet when ever the oscillating bar 6 is moved upward about its pivot 7. The selectors are provided with contact pieces 8 adapted to make contact respectively withcontact springs 9, the contact occurring for each selector when such selector is allowed by a perforation of suitable size to pass upward through the master sheet.- The contact pieces, 8, 9, are in circuits containing a source of current 10 and electromagnets 12, 12, three sets of such electromagnets and circuits being rovided, each set of electromagnets controlling the selectors` of the "concentric punches'of different sizes. If desired, the movement of the differentiating selectors 1, 2, 3, ma be made to act-uate the punch and" die se ectors positively, 'but the mechanical arrangement for 'such a device would be somewhat complicated as the movement would have to be` transmitted around the music sheet tol be perforated. It is therefore more convenient to use electric transmission as above described. In Fig.` 2 the movement of the master sheet 5 is inar direction at right an` gles to the planeof the illustration.

In the form of the invention illustrated in Fig. 3 the master sheet 21 is provided with three perforations for a loud note, two perforations for a medium note anda single perforation for a soft note. Inthis figure the movements of the master sheet 21l and copy 22 are also in a direct-ion at right angles to the plane of the illustration. The copy 22 to be produced will contain one, two, or three perforations according to the intensity of the note-which it re resents. In this form of the invention the ifferentiating selector 23 is in the form of a threeronged fork with the prongs 24, 25, 26 of iiferent lengths, and the selector will travel verti! cally a distance which is greater or less according as-one, two or three of the prongs are enabled to enter the master sheet when the selector is allowed to travel upward by the oscillation of t-he stop 27. The punch selector 28 in this case is moved a greater or less distance in the horizontal direction according to the travel of the selector 23 and will bring its thickened piece 30 over one, two or all of the three punches 31, 32, 33, these punches being operated through the piece 30 by the descent of the oscillating bar 34 which extends right across themachlne.

Fig. 4 shows a master sheet 35 having proj ections of varying depth and differentiating selectors 36, '37, 38, one, two or all of which are operated according as a small, medium or deep projection is in operation. Each of the selectors 36, 37, 38 in this case will operate a different size punch operatin in a manner analogous to that illustrated 1n Fig. 1 above. In this case the movement 'of the master sheet is in a direction parallel to thel plane of the illustration. VIn Figs. 5, 6, and 7, the movement of the master sheet is also assumed to be in a direction parallel to the planes of the illustrations.

I-n the form of the invention shown in Fig. 5 the lmaster'sheet- 40 is provided with indentations -of different depth corresponding with notes of dierent lntensity. The selectors comprise levers 41 42, 43 pressing against the master sheet under the action of springs. The levers are connected by rods 44 and bell crank levers 45 to punch selecting devices 46, 47 .48 which move in a horizontal direction so as to bring a thickened part between vibrating bars 49 extending across the machine and punches 51, 52, 53 of different sizes. It-will be seen that in this modification of the invention the o eration of the largestv punch 53 will only ta `e place when the selector 48 has moved through the full distance allowed bya deep perforation in the master sheet, while the punch 52 will be operated when the selector has moved through the distance corresponding to the medium indent-ation, the punch 51 being operated 'when its correspondin selector 41 is allowed to enter the smallest indentation.

Fig. 6 showsy an electromagnet device similar to that above described but applied to a master. sheet 55 provided with projections, 56, 57, 58 of varying depth, the operation of the selector. being similar to that abovev described with reference to Fig. 2. Fig. 7 shows a similar arrangement as applied to a master sheet 59, having indentations 60, 61, 62 of varying depths.

It will be seen that the punches forming, the groups of punches or equivalent perforating devices may be in separate machines each machine comprising a row of punches together with selecting devices adapted to .differentiate between variations of the representations or notes on the master sheet corresponding to different intensities of sound, the music sheet and master sheet in such cases being passed consecutively through the several machines.

1. Apparatus for producing from a master sheet, perforated music sheets having perforations of different effective area, the different effective areas corresponding to the different intensities of sound required to be produced' in playing.

2. Apparatus for producing from a master sheet, perforated music sheets having perforations of different effective-areas, consisting ofperforations of varying width, the different effective areas corresponding to the different intensities of sound required to be produced in playing.

3. Apparatus for producing from a master sheet, perforated music sheets having perforations of different effective areas, consisting of a'varying number of se arate perforations for each note, the di erent col'- lective eifective areas of such separate perforations corresponding to the different intensities of sound required to be produced in playing.

4. Apparatus for producing from a master sheet, perforated music sheets, having perfcrations of diferent effective areas, comprising in combination a number of groups of punches, each group representing a note, the punches of each group being adapted to produce in a music sheet perforations of different effective area, punch selecting devices for said punches, and diferential selectors cont-rolled by the variations in the representation of notes in the master sheet, which represent different intensities of sound. n,

5. Apparatus for producing from a mas- .ter sheet, perforatedfmusic sheets. having traversing the master sheet past said select- 10 'perforations of different effective areas, ing fingers, and means for operating said comprising in combination groups of punches and selector fingers, as set forth. punches of different diameters, means for I, In testimony whereof, I aix my signature 5 travelsing themusic sheet to be perforated l in presence of two witnesses.

longitudinally past Said punches, punch se- WILLIAM H. GRIMSDALE. lecting devices including selecting fingers Witnesses:

having conical4 points adapted to enter the W. GRYLLS ADAMS,

perforations in the master sheet, means for BERTRAM H. MA'I'IHEWB. 

